Lasting machine



.Eafiza. T

4 Sheets-Sheet l J W BARNA LASIING MACHINE Filed April 50, 1942 1943. J. w. BARNA 2,327,758

LASIING MACHINE Filed April 30, 194 2 ZZZ M5 4 SheeCs-Sheet 2 Au 24, 1943. J. w. BARNA 2,327,758

LASIING MACHINE Jolie 0? Patented Aug. 24, 1943 LAST ING MACHINE Joseph W. .Barna, Chicago, 111., assigncr by direct and mesne assignments, of forty-nine onehundredths to 0. A. Laystrcm, thirty-two onehundredths to Mary Theresa. Barna, five onehundre'dths to Carl A. Laystrom, and fourteen one-hundredths to Valentine E. Hoffman, all

of Chicago, Ill.

Application April 30, 1942, Serial its. 441,083

9 Claims.

The invention relates to lasting machines of the type disclosed in my Patent No. 2,144,58 dated January 17, 1939, the general object of the invention being to simplify and improve the construction and arrangement to adapt it more particularly for the lasting of shoes having high uppers, as for example childrens shoes.

An important object of the invention is to lo cate below one side of the wiper assembly the threaded shaft by which the wiper blade supporting slider blocks are shifted longitudinally of the machine, so that the shaft will not be in the way of a long upperextending down through the machine from a last to which the upper is being wiped.

A further object is to provide improved and simplified structure for holding the heel of the upper during wiping thereof.

Anotherobject is to provide an improved last jack structure and adjustment therefor.

The various features of my invention are embodied in the structure shown on the drawings in which Figure 1 is a plan view of the machine with the wiper assembly removed; a;

Figure 2- is a plan view showing the wiper assembly;

Figure 3 is a section on plane III-r-III of Fig. 2;

Figure 4 is a section on plane IVIV of Fig. 3;

tudinally of the machine. The screw shaft 23 for the slider blocks is journaled in the uprights l8 and I3 below the guide ban20. The front block 2| is bored to receive av bllshinguinteriorly threaded to receive the right hand threads on the front end of the shaft 23. The rear slider block has a similar bushing 24 receiving the lefthand threaded rear end of the shaft 23. T An arm 25 extends upwardly from the front end of the bushing 24 and is secured at its end,as by a screw 26, to the block 2| at the V supporting pins 3 I;

Figure 5 is a section on plane VV of Fig. Iii- 3 Figure 6 is a section onplane VI--VI of Fig. 1; Figure 7 is a front elevation to reduced scale showing particularly the treadle mechanism for operating toggle structure; and

Figure 8 is a plan view of the treadle amsm.

The machine shown comprises a supporting frame F on which is mounted the base or bed structure B for supporting the various operating parts. The structure 13 comprises longitudinally meche;

middle thereof. A similar arm 21 extends from the rear end of the bushing 24' inthe rear block 22 and is secured by a screw 26' to the rear side of block at the middle thereof. With this arrangement, upon turning of the hand wheel 28 at the front end of the shaft 23, the blocks will be moved toward or away from each other, the engagement between the ends of the arms and 21 and the blocks at the middle thereof causing the blocks to shift easily along the guide bars l9 and 20. I T

The front block 2| has a dovetail channel 29 for receiving in its end the dovetail bottoms of posts 30-and 30 which are bored for receiving Each post has an arm 32 extending therefrom which at its outer end carries a supporting pin 33. Detachably secured by screws 34 to the pins 3| and 33 on the post 30 is the left toe wiper plate 35, the right toe wiper plate 36 being secured by screws 31 to the pins on the posts 30.

extending side walls Ill and H, a bottom wall l2,

and walls l3 and [4 extending laterally fromthe upper ends of the side walls. The bottom wall l2 has the opening l5 therethrough which is in alignment with the opening 16 through the top of the supporting frame F. i

- Extending upwardly from the front end of the. base bottom wall I2 is a pair of uprights H and I8 and at the rear end of the base is a similar pair of uprights l1 and I8. The'uprights I! and IT support a guidebar 19 while the uprights l8 and I8 support the guide bar 20. Receiving these bars are the front slider block 2| and the rear slider block 22 for movement on the bartoward and away from each 'other longi- The rearslider block 22 has the dovetail channels 38 at its ends for receiving the dovetail bottoms of the posts 39' to 39' each supporting at its upper end a pin 40 and having an arm H extending therefrom for support of a pin 42. Secured by screws 43 to the pins 49 and 42 is the -left heel wiper plateg44,'and by screws 45 the right heel wiper 46 is secured to the pins of the post 39;

The side wipers 4! and 48 are supported, and associated with the toe and heel wipers; in the same manner as fully disclosed in my copending application Serial No. 437,331, filed April 6, 1942. Each side wiper is mounted on a slide bar 49 mounted in the guide head 50 at the upper end of a post 5| extending up from the machine base,

the side wipers beingrigidly secured to the inner ends of the bars 49 so as to be able to move only in one direction, namely widthwise of'the machine. Each side wiper has channels 52 and 53 in its upper side receiving tongues54 and 55 on the toe and heel wipers. respectively so that as the toe and heel wipers are shifted longitudi- 51, 51 respectively, the tables having tongues 53 engaging in guide channels 59 in the supporting walls for guidance of the tables transversely of the machine, Toggle mechanism is shown for shifting the tables 51, 51. Each table has a lug I 60 extending downwardly therefrom through an opening 66 in the corresponding supporting wall, and depending from each supporting wall is a lug 6!. Toggle links 62 and 63 fulcrum at their ends in the lugs 60 and 6|, their inner ends being pivoted to' a bar 54. The lower ends of the bars are connected by a cross bar 65 from the center of which a rod 66 depends and is guided in the head of a stirrup structure 61' which is suspended by *itsfleg's' 6'! which are secured to the base structure BI- as best shown on Fig. 4.

The lower end of the rod 65 is connected with treadle mechanism-as shown on Figs. 7 and 8-. The rod 66 is connected by a turn-buckle 68 with one end-of a rocking lever fiilfulcrumed on a post 70 extending upwardly on a-frarne l l. The right end of the'lev'er 69 isconnected by an adjustable link'lZ' with a treadle lever l3 fulcrumed at its rear end to the frame l|,the'treadle lever at its forward end being guided between; vertical walls 7 14 extending upwardly from the frame TI. "The leftend-of the lever'fifi is connected by an adjustable'link 15 with the treadle lever lib fulcrumed at its rear endto the frame ''H and guided at its forward end by the wall 11 on-the frame H. Depression of the treadle lever 73' Will effect downward pull of the rod 66 and operation of the toggles to shift the tables 1 and '51 outwardly, while depres's'ion'ofthe treadl'e 16 will effect operation of the toggles to shift thetables inwardly. I H e Qn'eachof the tables 51, 51' are mo'un 'ted front and re'ar cam railsl8 and 19fthe rail being secured t'o'the 'innerie'nds of bars Efl'a'n'd :BI which are guided in channels 32andf83 extending transversely of the respective table. Extending from the'wiper supporting pos't'30 is aniarm 84 hav- 'in'g' cam rollers 85 for engaging with the oppositeside's' of the-cam rail 18 on the table 5?. The post {f has a similar arm 84 and rollers 85 engaging with opposite sides of the cam rail {18 on thetable 51". The rear cam' rail 19 011 the table filis engaged by therollers econ the'ar'm"8l'extending from the post 39, and the cam rail 19 on the table 51 is engaged by rollers '85 on'"the arm 81 extending from the post 39". The' cam rails are similarly inclined so that whenfthe slider blocks are shifted longitudinally'df the machine by turning of the hand wheel 28, the toe wipers an'd the heel wipers willbe' moved transverselyof the machine for closure of the wiper assembly against an upper to be'lasted, F

' Each of the cam rail supportin'g bars has'at its outer end a tongue 88 and a channel'89 inwardly of the" tongue, the tongue and channel extending across 'thebar onthe bias. Each of the bars is engaged by a gauge plate. Thebars 80' of the cam rails :T8 eac'h' engage with a gauge plate 90, while the bars '8I of' the cam rails 79 engage each with a similar gauge plate 91. Each gauge plate has a groove '92 and a tongue 83 receiving respectively the tongue and groove on the corresponding rail supporting bar, the tongue and groove of each gauge plate being inclined to the same angle as the tongue and groove in the corresponding bar. Each gauge plate has a rectangular head 94, the heads of the gauge plates on the table 51 engaging in a rectangular guideway 95 formed in the table and extending longitudinally along the outer edge thereof, while the heads of the gauge plates on the table 51. engage in a guideway 94' formed longitudinally along the outer edge of the table. A setting screw 9% extends through each guideway and has threaded "engagement with the gauge plate heads in such guideway, each screw at its rear end being anchored andjournaled in the end wall 91 on the respective table. Each screw terminates in a hand wheel 98 whereby it may be turned. By turning of the screw, the gauge plates are shifted relative to the bars Bil and BI for setting of the cam rails transversely of the machine for the various sizes of uppers to be lasted. The gauge plate has scale indications 99 thereon cooperating with pointers or arrows 'x and g respectively on the bars and M for determiningthe setting to'ber'nade of the plates for-the desired size upper. The camming angles on the plates ifill'and'fll are the same so that when the plates are moved in either direction by turning of the screw 96, and to the distance of one of the scale divisions on the plates. thebars 80 and '8! will be shifted correspondingly equal distances for setting of their cam rails for change in shoe length of say one third of an inch. Thus, when the machine is to be used for the lasting of uppers for different shoe lengths,'adjustment' can the gauge plates;

g 1D I. at 113115 rear: side of the rear'slide'r block 22.

Extending 'upwardly from the'frame are the ears I02 between which operates the jack structure supporting lever 1'03 fulcrum'ed at its rear end by a pin I 04. Pivotedlto and depending from the forward end of'the'lever is the L-shaped bar I05 to the lower end of which is pivote'd' th'e' up- 'istanding'fjack'body I06 by a pin [01. The 'jack mpost. 108 has threaded engagementin the upper end io'f -th'e body N36 for up or down adjustment -for? engaging in :the'l'ast holes of lasts in the machine :ovierwhich uppers" are to be wiped. 0n Fig. 3 Liindicates .a last, and U an upper being wiped thereover. "The bar l05'andth'e jack body- N36 extend through the recess I09 provided in the rear slider block 22, the bar I05 being guided in achanneI H9 in the block at the back of the a For raising and lowering the jack structure for vertical adjustment of thelast, a cam bar III is slidable between the ears I02 below the lever H13 and has the cam end H2 engageable with the lev'er'for .vertical swing thereof when the 'ca'm bar'is shifted longitudinally. For shifting the cam bar, a threadedshaft H3 extends rearwardly therefrom through the'rea'r end of the 1 frame I00 and is engaged by anut I'll-which,

when'tiirned, will eifect longitudinal movement of the screw shaft and the cam bar for swing of the lever I03 and corresponding Verticaladjustment ofthe jack structure.

Secured to and extending upwardly from the frame N10 is" abracketHS terminating in a head IIB- which is threaded to'receive a screw l H. v The screw is bored .Ito' receive and support the of the wiper blade assembly. the bar l-presses S stem H8 whichat' its forward end terminates in ahead- I I8 pivoted between ears 120 extending rearwardly from the heel engaging'plate or frame I2! of arcuate cross section. By turning the screw ll'l the stem with'the heel frame thereon may be shifted longitudinally for adjustment of the heel frame relative toan upper, and the'heel frame has slight vertical swing on the end of the stem, which swing is resisted by a spring I22 inserted between the stem head and the back ofthe heel frame. The heel frame and its stem are also rotatable in the supporting screw ll'l. The heel frame may thus be accurately applied against the heel portion of an upper and owing to its various movements it will readily fit itself into proper position against the upper heel portion to hold this heel portion securely against the last for preventing slipping thereof during operation A spring I23 secured to againstthe'lower end of the jack body I06 and tends to hold this body vertical but permits swing of the body so that the jack post I08 may readily enter the last hole. The hook-shape jack structure may be of any length, depending on the length of the upper to be lasted, the openings l5 and IS in the base B and frame F affording ample clearance for the upper. The setting slider blocks will be moved toward and away from eachother on said guide bars, a wiper assembly supported on said sliderblocks; said. rear slider block having a recessin its front side, .and a hook-shaped lastjackadjustably supported on said-rear slider block and depending therefrom through said recess and into said clearanceopenthe sides and above said opening, front and'rear screw 23 for the wiper assembly supporting blocks 2| and 22 being at one side of the passageways l5 and IE will not interfere with nor obstruct the uppers, the upper extending freely down between the-slider block guide bars l9 and It will also be noted that the wiper blade supporting posts on the slide'r'blocks are'comparatively short to bring the wiper blades closer down toward the machine base B and to afford more rigid support for the wiper blades during a wiping operation.

I have shown a practical and eliicient embodiment of the various features of my invention but I do not desire to be limited to the exact construction and arrangement and operation shown and described as changes and modifications may be made without departing from the scope of the invention.

I claim as my invention:

1. In a lasting machine of the class described,

a supporting base structure having an opening therethrough, front and rear slider blocks mounted on said base for longitudinal movement toward and away from each other, a screw shaft journaled on said base structure at one side of said opening, connections between said screw shaft and said slider blocks adapted upon turning of said shaft to effect movement of said blocks toward and away from each other, wiper elements supported by said slider blocks, a hookshaped last jack structure supported on said rear slider block at one end of said base structure opening, said jack structure being of a length to receive comparatively long uppers for extension thereof through said base structure opening.

2. In a lasting machine of the type described, a supporting base structure having a clearance opening therethrough for long uppers to be lasted, guide bars extending along the sides of said base above said opening, front and rear slider blocks mounted on said guide bars for longitudinal movement thereon, a screw shaft journaled on said base structure at one side of said opening and having connection with said slider blocks whereby upon turning thereof said slider blocks on said guide bars", a screw shaft journaled in said bas'e'structure at. one. side of said opening and having connections with said slider blocks whereby turning of said shaft will effect movement of said blocks toward 'or'away from each other on said guide bars, a hook-shaped last' jack structuresuspended from said'rear slider block and terminatingat its upper end in a last hole receiving post, wiper assembly'supported on said slider blocks, said jack structure being of a depth to freely receive long uppers for extension through said base structure opening while the uppers are being lasted bythe wiper assembly. 1 i

4. In a lasting machine, a supporting base structure, front and rear slider blocks movable on said. base structure lengthwise of the machine, toe'wiper elements movable on said front slider block transversely of the machineand heel wipers on said rear block movable transversely of'the machine, side wipers movable with said toe andheel wipers, means controlling the movements of said slider blocks and wipers, a support on said front slider block forthe toe of alast on which an upper is to be wiped, a supporting frame on said rear slider block, alever fulcrumed at its rear end on said frame, a jack structure supported from the forward end of said lever and terminating at its upper end in a jack post for receiving the jack hole of a last, a cam member movable on said frame for engagement with said lever for effecting vertical adjustment thereof and of the jack structure, a screw shaft in said frame connected with said cam member, and 'a nut on said frame engaging said screw shaft and adapted when turned to effect the movement ofsaid cam member for vertical adjustment of said lever.

5. In a lasting machine of the type described, a wiper assembly for wiping an upper over a last in the machine, aframe at the rear of the machine below the wiper assembly, a lever fulcrumed at its rear end on said frame, a hookshaped jack structure suspended from the forward end of said lever and terminating in its upper end in a last supporting jack post, a cam member shiftable on said frame and having a cam projection cooperable with said lever for effecting vertical adjustment thereof and of the jack structure, means on said frame for controlling the shift of said cam member, a rotatable and longitudinally adjustable rod on said frame above aid jack structure supporting lever, and a heel plate mounted on the end of said rod for engagement with the heel portion of an upper to be wiped.

6. In a lasting machine, a base structure, supporting blocks movable longitudinally on said base structure toward and from each other, toe wiper structures shiftable on one of said blocks transversely of the base structure and heel wiper blocks toward or from each other, 'gauge'plates on said base structure having camming conne'ction with said cam rails,- and means for shifting said gauge plates for functioning of thescamming connections to set said cam'rails relative to said Wiper structures. 1 v

7. In a lasting machine, a base structure, front and rear blocksshiftable on said base structure towardand from each otherlongitudinally of the machine, left and right toe wiper elements mounted on said front block for shift thereon transversely of said base structure and left and right heel wiper elements on said rear block shiftable thereon transversely of said base structure, left and right supporting/tables on opposite sides of said base-structure, cam rails on the left table engaged by the left toe and heel wiper elements and adjustable transversely of said base structure, cam rails on the right table engaged by the right toe and heel wiper elements and adjustable transversely of said base; structure,

said cam rails functioning, to effect the transverse movement of said toe and heelwiper elements when said blocks are moved toward or from each other, gauge plates shiftable-longitudinally on each of said tables and having camming connections 'with the corresponding cam rails, and means on each table for shifting the gauge plates predetermined distances for corre-- sponding transverse movement and setting of said camrails and wiper elements;

8. -In .a lasting machine, a pair of toe wipers movable toward and from each other trans- 1 verselyl of the machine, :a pair of heel wipers movable toward and from each other'transversely of the machinegsaid toe wipers and heel wipers being movable toward and from each. other lengthwise of the machine, a cam :member for each wiper element andjabutments on said'element engaging saidcam member, said cam members being adjustable transversely ofthe madesiredsize of shoe uppers to be'lasted, gauge elements shiftablelongitudinally of the machine, connection between-said gauge elementsand the respective cam elements effective upon predetermined longitudinal movement of said'gauge members to set said cam elements and the corresponding wiper elements transversely of the machine, andmeans in the form of screw shafts for effecting the adjustment of said gauge el ments. 9. In a lasting machine, a base, supporting blocks movable longitudinally on said base structure' toward and from each, other, :toe wiper structures shiftable on one of said blocks; transversely of the base and heel wiper structures shiftable on said other'block transversely of the base, individual cam rail on said base for said toe and heel wiper structures and engagedthereby, said cam rails functioning to cause transverse relative movement of the toe and heel wiper structures upon movement of said blocks toward or from each other, a pair of gauge plates at each'side of said base having camming connectionswith the cam rails of the respective "toe andheel wipers, and a screw shaft for each pair of gauge plates for simultaneous shifting thereof for functioning of said camming connections to adjust the respective cam rails and wiper structures transversely of thebase;

JOSEPH w. BARNA. 

